Using a directory for output

[pearcetm]

I'd like to be able to use an output directory, rather than an output file, so that a task can write arbitrary output files to be saved. In the XML spec it seems the way to do this is the <directory> tag with <channel>output</channel>. However, the argument received by the task is always an empty string, and instead of a directory picker in the web UI, a default file output widget is created.

I think this is because the UI doesn't handle folders/directories as outputs:

slicer_cli_web/slicer_cli_web/web_client/parser/param.js

Lines 31 to 40 in 245692c

	if ((type === 'file' || type === 'image') && channel === 'output') {
	type = 'new-file';
	extra.extensions = $param.attr('fileExtensions');
	extra.reference = $param.attr('reference');
	} else if (channel === 'output') {
	opts.output = true;
	opts.params = _.extend(opts.params || {}, {
	[id]: type
	});
	return null;

I'm not sure if fixing the front end is the only thing that would be needed for this to work. Or, is there a different way I can achieve this instead?